JPH11504407A - 中空エアフォイルの耐衝撃性の向上 - Google Patents
中空エアフォイルの耐衝撃性の向上Info
- Publication number
- JPH11504407A JPH11504407A JP8532771A JP53277196A JPH11504407A JP H11504407 A JPH11504407 A JP H11504407A JP 8532771 A JP8532771 A JP 8532771A JP 53277196 A JP53277196 A JP 53277196A JP H11504407 A JPH11504407 A JP H11504407A
- Authority
- JP
- Japan
- Prior art keywords
- leading edge
- hollow
- spanwise
- rib
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/147—Construction, i.e. structural features, e.g. of weight-saving hollow blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/04—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from several pieces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2200/00—Mathematical features
- F05D2200/20—Special functions
- F05D2200/23—Logarithm
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S416/00—Fluid reaction surfaces, i.e. impellers
- Y10S416/02—Formulas of curves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
- Y10T29/49336—Blade making
- Y10T29/49339—Hollow blade
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.ガスタービンエンジン用の中空ブレードであって、前記ブレードは、該ブレ ードの底部から上部へ放射状に翼幅方向に伸びる前縁と後縁とを有し、前記前縁 から前記後縁へ翼弦方向に伸びる負圧面と正圧面とを有し、前記ブレードの前記 前縁に形成された前縁中実部を有する中空ブレードにおいて、 複数の内部翼幅方向補強リブは、実質的に放射状に翼幅方向に伸びて前記正圧 面と前記負圧面とを接続し、前記複数の翼幅方向補強リブは、それらの間に複数 の空隙を画定し、前記中空ブレード内の剛性の不連続性を減少させるように対数 的に配置されていることを特徴とする中空ブレード。 2.前記対数的な配置は、 D=Aext の式で表され、前記式において、t=0,1,2,3等であり、tは、前記前 縁中実部に続いて配置された前記各翼幅方向補強リブの連続する番号を表してお り、前記前縁中実部は零リブとして定義され、A及びxは経験的に導かれた係数 であり、eは自然対数の底であり、Dは前記前縁から前記t番目のリブまでの距 離であることを特徴とする請求項1記載の中空ブレード。 3.前記経験的に導かれた係数Aは、前記前縁と前記前縁中実部の 末端との間の翼弦方向の距離と等しく設定されることを特徴とする請求項2記載 の中空ブレード。 4.前記係数Aを導くための前記前縁と前記前縁中実部との間の翼弦方向距離は 、前記中空ブレードの前記底部から径方向の翼幅の約八十パーセント(80%) の位置で計測されることを特徴とする請求項3記載の中空ブレード。 5.前記係数xは、前記翼幅方向補強リブの内の一つの配置が確定した後に導か れることを特徴とする請求項4記載の中空ブレード。 6.前記対数的な配置は、前記中空ブレードの前記底部から前記上部へ向かって 径方向の翼幅の約六十パーセント(60%)から百パーセント(100%)の範 囲において維持されることを特徴とする請求項1記載の中空ブレード。 7.前記複数の翼幅方向補強リブは、前記中空ブレードの前記底部から該中空ブ レードの径方向の翼幅の約六十パーセント(60%)の位置まで均一の間隙を有 することを特徴とする請求項1記載の中空ブレード。 8.前記対数的な配置は、前記中空ブレードの翼弦方向の翼幅の初めの六十パー セント(60%)以内の範囲で維持されることを特徴とする請求項1記載の中空 ブレード。 9.複数の翼弦方向リブが翼弦方向に伸びて、前記複数の翼幅方向補強リブと相 互に接続することを特徴とする請求項1記載の中空ブレード。 10.前記各翼幅方向補強リブは、曲線形状を有することを特徴とする請求項1 記載の中空ブレード。 11.前記対数的な配置は、 D=A10yt の式で表され、前記式において、t=0,1,2,3等であり、tは、前記前 縁中実部に続いて配置された前記各翼幅方向補強リブの連続する番号を表してお り、前記前縁中実部は零リブとして定義され、A及びyは経験的に導かれた係数 であり、Dは前記前縁から前記t番目のリブまでの距離であることを特徴とする 請求項1記載の中空ブレード。 12.ガスタービンエンジン用の中空エアフォイルであり、前記エアフォイルは 、該エアフォイルの底部から上部へ放射状に翼幅方向に伸びる前縁と後縁とを有 し、前記前縁から前記後縁へ翼弦方向に伸びる負圧面と正圧面とを有し、前記エ アフォイルの前記前縁に形成された前縁中実部を有する中空エアフォイルにおい て、 複数の内部翼幅方向補強リブは、実質的に放射状に翼幅方向に伸びて、前記正 圧面と前記負圧面とを接続し、前記複数の翼幅方向リ ブは、前記中空エアフォイル内の剛性の不連続性を減少させるように対数的なパ ターンに基づいて配置され、前記対数的なパターンは、 D=Aext の式で表され、前記式において、t=0,1,2,3等であり、tは、前記前 縁中実部に続いて配置された前記各翼幅方向補強リブの連続する番号を表してお り、前記前縁中実部は零リブとして定義され、A及びxは経験的に導かれた係数 であり、eは自然対数の底であり、Dは前記前縁から前記t番目のリブまでの距 離であることを特徴とする中空エアフォイル。 13.中空エアフォイルを製造する方法であって、前記エアフォイルは、放射状 に翼幅方向に伸びる前縁と後縁とを有し、前記前縁から前記後縁へ翼弦方向に伸 びる負圧面と正圧面とを有し、前記エアフォイルの前記前縁に形成された前縁中 実部を有し、 前記前縁中実部の翼弦方向の長さを決定し、 放射状に翼幅方向に伸びて前記正圧面と前記負圧面とを接続する第一翼幅方向 補強リブを最適な間隔で配置して、前記第一補強リブと、前記前縁中実部と、の 間に第一の空隙が画定されるようにし、 前記中空エアフォイル内の剛性の不連続性を減少させるように、続く翼幅方向 補強リブを対数的なパターンに基づいて配置するステップを含むことを特徴とす る方法。 14.前記対数的なパターンは、 D=Aext の式で表され、前記式において、t=0,1,2,3等であり、tは、前記前 縁中実部に続いて配置された前記各翼幅方向補強リブの連続する番号を表してお り、前記前縁中実部は零リブとして定義され、A及びxは経験的に導かれた係数 であり、eは自然対数の底であり、Dは、前記前縁から前記t番目のリブまでの 距離であることを特徴とする請求項13記載の方法。 15.前記対数的なパターンは、 D=A10yt の式で表され、前記式において、t=0,1,2,3等であり、tは、前記前 縁中実部に続いて配置された前記各翼幅方向補強リブの連続する番号を表してお り、前記前縁中実部は零リブとして定義され、A及びxは経験的に導かれた係数 であり、Dは前記前縁からt番目のリブまでの距離であることを特徴とする請求 項14記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US430,948 | 1995-04-28 | ||
US08/430,948 US5584660A (en) | 1995-04-28 | 1995-04-28 | Increased impact resistance in hollow airfoils |
PCT/US1996/005889 WO1996034181A1 (en) | 1995-04-28 | 1996-04-25 | Increased impact resistance in hollow airfoils |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11504407A true JPH11504407A (ja) | 1999-04-20 |
JP3896161B2 JP3896161B2 (ja) | 2007-03-22 |
Family
ID=23709774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53277196A Expired - Lifetime JP3896161B2 (ja) | 1995-04-28 | 1996-04-25 | 中空エアフォイルの耐衝撃性の向上 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5584660A (ja) |
EP (1) | EP0823958B1 (ja) |
JP (1) | JP3896161B2 (ja) |
DE (1) | DE69603361T2 (ja) |
WO (1) | WO1996034181A1 (ja) |
Families Citing this family (67)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6048174A (en) * | 1997-09-10 | 2000-04-11 | United Technologies Corporation | Impact resistant hollow airfoils |
US20040115059A1 (en) * | 2002-12-12 | 2004-06-17 | Kehl Richard Eugene | Cored steam turbine bucket |
GB0425137D0 (en) * | 2004-11-13 | 2004-12-15 | Rolls Royce Plc | Blade |
WO2006059972A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Compressor variable stage remote actuation for turbine engine |
US8061968B2 (en) | 2004-12-01 | 2011-11-22 | United Technologies Corporation | Counter-rotating compressor case and assembly method for tip turbine engine |
WO2006110124A2 (en) | 2004-12-01 | 2006-10-19 | United Technologies Corporation | Ejector cooling of outer case for tip turbine engine |
US8561383B2 (en) | 2004-12-01 | 2013-10-22 | United Technologies Corporation | Turbine engine with differential gear driven fan and compressor |
US7631480B2 (en) | 2004-12-01 | 2009-12-15 | United Technologies Corporation | Modular tip turbine engine |
EP1828547B1 (en) | 2004-12-01 | 2011-11-30 | United Technologies Corporation | Turbofan comprising a plurality of individually controlled inlet guide vanes and corresponding controlling method |
WO2006059974A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Close coupled gearbox assembly for a tip turbine engine |
DE602004019709D1 (de) | 2004-12-01 | 2009-04-09 | United Technologies Corp | Tip-turbinentriebwerk und entsprechendes betriebsverfahren |
EP1828545A2 (en) | 2004-12-01 | 2007-09-05 | United Technologies Corporation | Annular turbine ring rotor |
US7845157B2 (en) | 2004-12-01 | 2010-12-07 | United Technologies Corporation | Axial compressor for tip turbine engine |
WO2006060004A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Combustor for turbine engine |
EP1834067B1 (en) | 2004-12-01 | 2008-11-26 | United Technologies Corporation | Fan blade assembly for a tip turbine engine and method of assembly |
WO2006059994A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Seal assembly for a fan-turbine rotor of a tip turbine engine |
WO2006059989A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Tip turbine engine support structure |
EP1825126B1 (en) | 2004-12-01 | 2011-02-16 | United Technologies Corporation | Vectoring transition duct for turbine engine |
WO2006110125A2 (en) | 2004-12-01 | 2006-10-19 | United Technologies Corporation | Stacked annular components for turbine engines |
US9845727B2 (en) | 2004-12-01 | 2017-12-19 | United Technologies Corporation | Tip turbine engine composite tailcone |
US9003759B2 (en) | 2004-12-01 | 2015-04-14 | United Technologies Corporation | Particle separator for tip turbine engine |
WO2006059978A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Cantilevered tip turbine engine |
US8033092B2 (en) | 2004-12-01 | 2011-10-11 | United Technologies Corporation | Tip turbine engine integral fan, combustor, and turbine case |
US8468795B2 (en) * | 2004-12-01 | 2013-06-25 | United Technologies Corporation | Diffuser aspiration for a tip turbine engine |
DE602004032186D1 (de) | 2004-12-01 | 2011-05-19 | United Technologies Corp | Turbinenschaufelgruppe eines Fanrotors sowie Verfahren zur Montage einer solchen Gruppe |
US7631485B2 (en) * | 2004-12-01 | 2009-12-15 | United Technologies Corporation | Tip turbine engine with a heat exchanger |
US7937927B2 (en) | 2004-12-01 | 2011-05-10 | United Technologies Corporation | Counter-rotating gearbox for tip turbine engine |
US8096753B2 (en) | 2004-12-01 | 2012-01-17 | United Technologies Corporation | Tip turbine engine and operating method with reverse core airflow |
EP1825128B1 (en) * | 2004-12-01 | 2011-03-02 | United Technologies Corporation | Regenerative turbine blade and vane cooling for a tip turbine engine |
DE602004020125D1 (de) | 2004-12-01 | 2009-04-30 | United Technologies Corp | Schmiermittel-versorgungssystem für das getriebe eines tip-turbinen-triebwerks |
US7882695B2 (en) | 2004-12-01 | 2011-02-08 | United Technologies Corporation | Turbine blow down starter for turbine engine |
US7883315B2 (en) | 2004-12-01 | 2011-02-08 | United Technologies Corporation | Seal assembly for a fan rotor of a tip turbine engine |
DE602004028297D1 (de) | 2004-12-01 | 2010-09-02 | United Technologies Corp | Umfangsbrennkammer für spitzenturbinenmotor |
WO2006060003A2 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Fan blade with integral diffuser section and tip turbine blade section for a tip turbine engine |
WO2006059996A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Balanced turbine rotor fan blade for a tip turbine engine |
WO2006059993A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Tip turbine engine with multiple fan and turbine stages |
EP1828568B1 (en) | 2004-12-01 | 2011-03-23 | United Technologies Corporation | Fan-turbine rotor assembly for a tip turbine engine |
US8757959B2 (en) | 2004-12-01 | 2014-06-24 | United Technologies Corporation | Tip turbine engine comprising a nonrotable compartment |
EP1831521B1 (en) * | 2004-12-01 | 2008-08-20 | United Technologies Corporation | Variable fan inlet guide vane assembly, turbine engine with such an assembly and corresponding controlling method |
WO2006060014A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Starter generator system for a tip turbine engine |
WO2006059979A1 (en) | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Tip turbine engine integral case, vane, mount, and mixer |
EP1828573B1 (en) | 2004-12-01 | 2010-06-16 | United Technologies Corporation | Hydraulic seal for a gearbox of a tip turbine engine |
US7976272B2 (en) | 2004-12-01 | 2011-07-12 | United Technologies Corporation | Inflatable bleed valve for a turbine engine |
WO2006060002A1 (en) * | 2004-12-01 | 2006-06-08 | United Technologies Corporation | Fan blade with a multitude of internal flow channels |
WO2006062497A1 (en) | 2004-12-04 | 2006-06-15 | United Technologies Corporation | Tip turbine engine mount |
US7476086B2 (en) * | 2005-04-07 | 2009-01-13 | General Electric Company | Tip cambered swept blade |
US7374403B2 (en) * | 2005-04-07 | 2008-05-20 | General Electric Company | Low solidity turbofan |
GB0516036D0 (en) * | 2005-08-04 | 2005-09-14 | Rolls Royce Plc | Aerofoil |
US7458780B2 (en) * | 2005-08-15 | 2008-12-02 | United Technologies Corporation | Hollow fan blade for gas turbine engine |
GB0707426D0 (en) | 2007-04-18 | 2007-05-23 | Rolls Royce Plc | Blade arrangement |
US8967945B2 (en) | 2007-05-22 | 2015-03-03 | United Technologies Corporation | Individual inlet guide vane control for tip turbine engine |
GB2450139B (en) * | 2007-06-14 | 2010-05-05 | Rolls Royce Plc | An aerofoil for a gas turbine engine |
GB0717009D0 (en) * | 2007-09-01 | 2007-10-10 | Rolls Royce Plc | A component structure |
GB2455095B (en) * | 2007-11-28 | 2010-02-10 | Rolls Royce Plc | Turbine blade |
GB0815483D0 (en) | 2008-08-27 | 2008-10-01 | Rolls Royce Plc | Blade arrangement |
GB0815475D0 (en) | 2008-08-27 | 2008-10-01 | Rolls Royce Plc | A blade |
GB0815482D0 (en) | 2008-08-27 | 2008-10-01 | Rolls Royce Plc | A blade and method of making a blade |
CN102734218B (zh) * | 2012-06-27 | 2014-10-22 | 中国航空工业集团公司沈阳发动机设计研究所 | 一种宽弦空心叶片结构设计方法 |
EP2904255A4 (en) * | 2012-10-01 | 2015-12-02 | United Technologies Corp | GEARBED FURNITURE WITH FAN ROTOR WITH HIGH PERFORMANCE INTENSITY |
EP2971521B1 (en) | 2013-03-11 | 2022-06-22 | Rolls-Royce Corporation | Gas turbine engine flow path geometry |
US9596808B2 (en) | 2014-04-30 | 2017-03-21 | Cnh Industrial America Llc | Transport system for a center pivot agricultural machine |
CN106032808B (zh) * | 2015-03-13 | 2019-07-02 | 中国航发商用航空发动机有限责任公司 | 一种空心风扇叶片及航空发动机 |
US10458426B2 (en) | 2016-09-15 | 2019-10-29 | General Electric Company | Aircraft fan with low part-span solidity |
US10641098B2 (en) * | 2017-07-14 | 2020-05-05 | United Technologies Corporation | Gas turbine engine hollow fan blade rib orientation |
US10828718B2 (en) * | 2018-06-14 | 2020-11-10 | Raytheon Technologies Corporation | Installation of waterjet vent holes into vertical walls of cavity-back airfoils |
US10919116B2 (en) | 2018-06-14 | 2021-02-16 | Raytheon Technologies Corporation | Installation of laser vent holes into vertical walls of cavity-back airfoils |
US10837286B2 (en) * | 2018-10-16 | 2020-11-17 | General Electric Company | Frangible gas turbine engine airfoil with chord reduction |
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US4815939A (en) * | 1986-11-03 | 1989-03-28 | Airfoil Textron Inc. | Twisted hollow airfoil with non-twisted internal support ribs |
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FR2698126B1 (fr) * | 1992-11-18 | 1994-12-16 | Snecma | Aube creuse de soufflante ou compresseur de turbomachine. |
US5269058A (en) * | 1992-12-16 | 1993-12-14 | General Electric Company | Design and processing method for manufacturing hollow airfoils |
US5439354A (en) * | 1993-06-15 | 1995-08-08 | General Electric Company | Hollow airfoil impact resistance improvement |
US5419040A (en) * | 1994-04-29 | 1995-05-30 | United Technologies Corporation | Hollow fan blade fabrication |
-
1995
- 1995-04-28 US US08/430,948 patent/US5584660A/en not_active Expired - Lifetime
-
1996
- 1996-04-25 DE DE69603361T patent/DE69603361T2/de not_active Expired - Lifetime
- 1996-04-25 WO PCT/US1996/005889 patent/WO1996034181A1/en active IP Right Grant
- 1996-04-25 EP EP96918987A patent/EP0823958B1/en not_active Expired - Lifetime
- 1996-04-25 JP JP53277196A patent/JP3896161B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69603361T2 (de) | 2000-01-20 |
WO1996034181A1 (en) | 1996-10-31 |
DE69603361D1 (de) | 1999-08-26 |
EP0823958A1 (en) | 1998-02-18 |
EP0823958B1 (en) | 1999-07-21 |
US5584660A (en) | 1996-12-17 |
JP3896161B2 (ja) | 2007-03-22 |
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